Skating rink floor



Dec. 31, 1935. 13l s. MacLr-OD 2,026,052

SKATING RINK FLOOR Filed Sept. 13, 1934 mam@ Patented Dec. 31, 1935 UNITED STATES PATENT cruce SKATING RINK FLOOR Donald S. MacLeod, Detroit, Mich., assignor to ,yg Olympia, Incorporated, Detroit, Mich., a corporation of Michigan Application September 13, 1934, Serial No. 743,810

8 Claims.

The invention relates to skating rink floors. One object of the invention is to provide an improved skating rink floor which is composed of elements which will prevent moisture from seeping through from the concrete in which the freezing pipes are embedded to the subjacent insulating and supporting layers of material. Another object of the invention is to provide an improved method of constructing the concrete layer in which the freezing pipes are placed so that they will be supported at uniform height and uniformly spaced apart without the use of Wood or metal supports which corrode or deteriorate from the moisture seeping through the concrete.

` Other objects of the invention will appear from a consideration of the following detailed description.

The invention consists in the several novel features hereinafter set forth and more particularly defined by the claims at the conclusion hereof.

Inthe drawing:

Fig. 1 is a sectionthrough a completed oor embodying the invention; and

Fig. 2 is a perspective of oneof the preformed slabs used to support the freezing pipes preparatory to pouring the concrete over them; and

Fig. 3 is a section on an enlarged scale showing the membranes between the thermal insulation and the concrete containing the freezing pipes.

The improved floor is supported by a bed 6 of concrete of suitable thickness to sustain the superimposed load. After the bed 6 of concrete has been laid, a coating of asphalt 1 is applied to the top of thebed effectively to prevent any moisture from seeping into the bed from above. Next a mixture 8 of a compound composed of crushed shale and Portland cement, usually about 5-inches in depth is laid on the asphalt coating over lthe bed. This mixture has a high percentage of insulating qualities as compared to concrete and is especially efficient as far as carrying and supporting characteristics are concerned. It is composed of: 1% barrels of cement; 65/ 100 of a cubic yard of shale crushed to ai; mesh; and an equal amount of shale crushed to a mesh ranging from 1% to 3A inch. The 50 weight of this mixture is approximately twothirds that of ordinary concrete and its insulating properties are from four to five times greater than concrete. ary to place a bed of dry sand over the concrete 55 bed. When this is done, the moisture seeping Heretofore it has been custom- (c1. s2-12) ,Si

into the sand forms pockets which cause the concrete in which the freezing pipes are placed to be unevenly supported and also forms passages through which moisture will pass from 4 that concrete into the supporting bed. The :55 mixture under consideration is tamped to insure a dense homogeneous mass and to avoid all vair pockets. When the mass 8 has set a heavy mopping of hot water-proofing asphalt S is applied n to the top of the mixture 3 and a layer I0 of l0# corkboard, usually 2-inches in thickness is rembedded in the hot water-proofing asphalt 9. The layer of corkboard serves as thermal insulation between the concrete in which the freezing pipes .Y are embedded and the mass 8. j y l5 Next a three-ply cotton fabric, which forms a water-proofing membrane, is laid in mappings of water-proof asphalt II on the top of the cork insulation. The top of the membrane is glazed and two layers I2 and I3 of dry oil-craft paper 26 are laid over this membrane. The purpose of providing two sheets of oilfcraft paper is to permit relative movementbetween the concrete in which the freezing pipes are embedded and the cork insulation, and also to prevent moisture 25 from seeping downwardly from said concrete.

Next, pre-formed slabs of concrete I4 having cast therein grooves I5 which are adapted to receive the freezing pipes I6 are placed on the top sheet of the layer IG of oil-craft paper. The 30 freezing pipes I6 with a paraiiin coatin'g are then laid in the grooves I5 of the pre-formed slabs I4 so that they will be supported at a uniform height and in evenly spaced relation. Then a mass of concrete I8 is poured over the 35 pipes I6 and the slabs I 4. Sufficient concrete is poured above the pipes to separate them from the top of the concrete. After the mass of concrete i8 above the pre-formed slabs has set, a finishing layer I9 of terrazo is laid thereon. 40

By using pre-formed slabs of concrete to support the freezing pipes I5 while the top I8 of the concrete is applied, 'the pipes are supported without metal or wood spacers such as have Yheretofore been used. By coatingvthe freezing pipes I6 with paraffin the concrete is prevented from adhering to them so that they will be free to expand and contract under temperature changes'. The usual expansion joints are provided in the floor where necessary but since this forms no part of the present invention they have not been illustrated.

The invention exemplifies a skating rink floor; which is so constructed Vthat moisture Ycannot seep below the concrete in which Vthe freezing pipes are embedded, and thus deterioration of the insulating and supporting members by moisture is effectively prevented.

The invention also exemplies a method of laying the freezing pipes in the concrete which dispenses with metal or wooden spacers which corrode or deteriorate because there is no metal extending through the concrete from the freezing pipes.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention. Y

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is:

1. A skating rink floor comprising a supporting bedding, a thermal insulating layer supported on said bed, afabric united by a waterproof coating to the top of the insulation, a layer of concrete above the insulating material, refrigerant circulating pipes in the concrete and a plurality of water-proof sheets between the fabric and the concrete.

2. A skating ring floor comprising a supporting bed, a layer of cement and crushed shale over the bed and supported thereon, a thermal insulating layer over said mixture, a layer of concrete over the insulating material, refrigerant circulating pipes in the concrete, and waterprooi-lng material between the concrete, and the insulating material.

3. A skating rink floor comprising a supporting bed, a layer of mixed cement and crushed shale over the bed and supported thereon, a water-proofcoating on said layer, a thermal insulating layer on said coating, a layer of concrete over the insulating material, refrigerant circulating pipes in the concrete, and waterproong material between the concrete and the insulating material. 4. A skating rink oor comprising a supporting bedding, a layer of mixed cement and crushed shale over the bed and supported thereon, a water-proof coating over said layers, a thermal insulating layer on said coating, a layer of concrete over the insulating material, refrigerant circulating pipes in the concrete, a Waterproofed fabric on the insulating material, and a plurality of water-proof sheets between the fabric ,and the, concrete.

5. That improvement in laying skating rink iioors which consists in laying insulating material upon a supporting bed, supporting above the insulating material pre-formed slabs of concrete having spacing means for refrigerant circulating pipes therein, laying the pipes in spaced relation onto the pre-formed slabs, and pouring concrete over the pipes While sustained by the pre-formed slabs.

6. That improvement in laying skating rink iioors which consists in laying insulating material upon a supporting bed, supporting preformed slabs of concrete having recesses for spacing refrigerant circulating pipes, laying the pipes in spaced relation into the recesses of pre-formed slabs and pouring concrete over the pipes while sustained by the slabs.

7. That improvement in laying skating rink floors which consists in laying insulating material upon a supporting bed, coating refrigerant circulating pipes with lubricant to prevent concrete from adhering thereto, supporting refrigerant circulating pipes above the insulating material in spaced relation, and pouring concrete over the pipes. 

